Carbureter.



No. 886,526. l

W.' L. MARR. GARBURBTER'.' APPLIGATION FILED APB.. 9. 1906.

PATENTED' MAY 5, 1908.

2 SHEETS-SHEET 2.`

CIK

narran srafrse errar sesion.

WALTER LQ man, or Monson, menigeen...

CARB Imis 'mit g No. ssasee.

To all whom it fm cy concern:

'Be it known that l, WALTER L. MARR,- a citizen of the United States .of America, residing at Jackson, in the county of Jackson and State of Michigan, have invented certain new and useful Improvements in Carbureters, of which the following is a specification, ref erence being had therein to the accompanying drawings.

his invention relates to improvements in carbureters of the floatfeed type and one of the objects of the invention is toso arrange the spray nozzle and mixing chamber with reference to the float chamber that the tipping of the device will not materially affect the level ofthe li uid inthe nozzle and a very compa-ct arrangement of parts is se cured. r y

It is also an object of the invention to so construct the device as to make al'l parts readily accessible for cleaning and repair and to provide improved adjustable means for. accurately regulating the inlet of air and gasolene to secure the'poper mixture under ordinary running conditions. A further object of the invention is to provide an auxiliary air inlet adapted to admit air when the speed of the engine is increased which inlet is so arranged relative to the mixing chamber that the inrushing air from said inlet, sweeps across the discharge end of said chamber, increasing the vacuum therein and thoroughly mixing with the mixture therefrom. 4

To this end the invention consists in the construction, arrangement and combination o arts, all substantially as hereinafter more ful y described and particularly pointed out in the claims, reference being had to the accompanying drawings, in which i Fi ure 1, is a longitudinal vertical section of a evice embodying the invention; Fi 2, a plan view of the same, with parts bro en away to show the construction; Fig. .3, a transverse vertical section; and Fil?. 4, a horizontal section on the'line wea; ofbFi 3.

As shown in the drawin s 1 is the doet chamber, 2 the sheet metal oat therein, and 3 a stand pipe secured to the bottom of the chamber by forming a tapering seat 4 in' the bottom of the chamber to receive the tapered end of the stand pipe,` aninternally screwi threaded coupling 5 provided with a shoulder 6 to engsgeashoulder on the stand i e being provided to force said te ering enrlhiimly to its seat and malte a' tiglit joint. A supply Specification of Letters Patent.

Application led Api-119, 1906. Serial No. 310,685.

rate-mea may 5, ieee.

pipe 7 opens into the stand pipe nearits lower end below a partition 8 therein formed 'with-a passage 9, to the under side of which partition and over said passage, is secured oneend of a tubular screen lO'by a coiled spri 11, one end of which clamps the edge oi the site end cngagingthe removable cap 12 forming the lower end of the stand pipe. A settling chamber is thus formed in the lower end of the sta-nd pipe, the screen whichL hangs any sediment from passing liuprward in the pipe, and this chamber and screen maybe readily cleaned at any time by removing the cap, the removal of said cap releasing the spring which clamps the screen. J

l'Vithin the upper end of 'the stand pipe is a plug or weight 13 of less diameter than the internal diameter of the pipe so`that the gas0- lene may pass upward around it freely and on its lower end is a needle point 14 forming a valve to seat within thc u iper end of the passage 9 and stop the flow oli gasolene to the float chamber above. ln the bottom of the float chamber is a yoke lever 15 which is pivoted upon the bottom of said chamber intermediate its ends at 16 and attached at one end to the'plug 1B by an adjusting screw 17 engaging aslot therein to permit a free rocking movement oi the lever. The oppo. site end of the lever is provided with a vertical extending lugr to engage the bottom ofthe chamber and the float settles down, the lever will be rocked, lifting the needle point from its seat and admitting gasolene. The liftof by the adjusting screw 17 and a lock nut 18 is provided thereon to hold the screw in its adpisted position.. The body ot' the device oonsistsfa cast vertically extending cylindrical portion 19 formed at its lower end with a circular head 2() for the iloat chamber, provided with Aa downwardly extending liange to project into l'thupper end of the cylindrical sheet metal o f the lower head 22 o1IV the chamber. Formed integral with-the body portieri or head 20 isa this air chamber is closed by a solid head 24 25 having a reduced and externally screwscreen between it and the partition, its opp@ downward within said chamber preventing' float so that as the gasolcne is used out of thethe lever may be very accurately determined 21 which is secured it 'its lower end to` provided with a downwardly extending stlrd cylindrical portion 23 extending downward Wlthlirthe float chamber and forming an' axlal air chamber therein. rlhe lower end of [in internally screw-tliroiidoti lioro extonds downward within tho stud ii, Short distance to receive on upwardly amending nozzle member 27 and ii ti'iniiiverso pilon-sigo 28 is bored through the stud., through which pasisiige the gosolene liows from the iloiit ,chamber to the nozzle. The innioleno iu maintained at ii. certain level iu the. lloot cliiimiior iii the fioiit :ind it rines to und is maintain@ ot substantially tho annie loi/ol to the nozzle rgo'dlosis ol' the tipping ol tho floiitlohaniber siii said nozzle is located in tho axis of sind chamber, und therefore tho gioioleiie. will not fail too low or overflow troni the nozzle whom-the device tippod. iiliout in ordinary use on an autoinohiio and tho dovice is nitide 'very compact ny so locating tho oir chamber,

Extending laterally' outword troni ono sido of tho oyiindriool lioly 1.9 i i'ylindrii'id pipo or passage 2S) having o lhiuifo iit its und oy moons of which it niiiy honor-umd to tho :fyiiixei' of fin explosivo ongino'iu ooinniuiiimtion tlioiewitli, und oxtonding lotoriilly outward i'i'oin sind. body iziii iliiiniotrimiliy opposito direotion is on oir intuito pipo or possono 3U. Those pussogon 2li und I() nro i'osinootod to iniilio ii druot trainsiilnio piinsnlgzi'f through thi-i vertically oxtontlingv hotly iti., hy ii short tubular cost-nig til l'oriuod to it vloiioly within said body und provided with o short tul ulm' arm 32 extending :it right iinilon thoroto downward within tho nir i-hiinihor 25 inni forming ii inixinirI ohiinilior, tho und oi' tho nozzle projecting iipwiril thoioin n short dio tance. ft simili screw or pin 33 in tho sont for Pia-id casting iii engages o, riwonfi thoi'oin to huid the yamino l'roni turningY in its sont.

The upper ond oi tho holly iU oxtondu' o short distance ,uliovo the upper sidi oi' thoI costing 31 therein und in olonoil hy o sorow 5G7 cup 34 provided with ii uorios ol' oponings 35 for the iidniinsion of nir. Supported upon :i hul) on tho ou iit ii distancia uhovo tho oponn ings is a, :shia d 36! tin'hod downwizrd zit its migo tit ii. distance. i'i'oni tho migo of tho oiip to forni a tortuous posiiiigo lor tho iiir iiiid koop'- out the dust :ini dirt. 'l`ho ssiid costing 3l is formed nt its oppor sido with ir lliit sont 37 of less Width than tho dininotor ol'4 tho hody l 19 :so that ot oooh nido thorool is im opening GOISS'OI' the downward. piinsiigo oi' nir nround said casting und into tho iiiroluuuhor 23 holow froniwliioli oliinnlioritis drown hy thosuotion Stroke of the origine cylinder into tho parisiigo 32 through the mixing ohinnlior, post tho nozzle, gsi-unionev being 'ot tho saine tiino asoma drawn from the nunziov and token iip'liy tho ingoiug air.

To regulate tho smiouiit of iiir Wliioli "will he (.liiiwn in through the fiponings 1&8, i1y pinto or niutiliitod disk Si) is soatod upon tho sont .'7 sind provided-with ii :sioni 4l) amending upward through on axiiil oponiug in. tho huh oi the oop liv moons .of which it muy lio tui'nedL ii coiled spring Lti. on siiid steinl hetwoen the disk and oop, noting to hold sind disliito its aient. fin iirni 42 is soourod to tho outer ond of the stoniiind this zirni carries ii spring iiotuatod Gott-,li 43 to engage o serios of holes or notohoo in the. shioid It'i to holdrtho disk in tho position to which it muy oo turned.

The outer und of the piisiiiige 30 if; closed hy iininwin'dly opening` voli/'e 44 hold to its senil by" on adjustable spring; 45, the tonfiion of whioh niiiy lio'so'roguliited -tliittsoid volvo will opon oni w'lion tlio suction ol the origine is iinzroiisoil ioyond :i ooitiiin irodotornnned innount hy tho inormiiod npooil ol tho origine. When the ongino is running at :i slow i; oeil oir will lio drown in post the viilvo diei( 3Q only7 lint ini this iiii is diiootod ilirootljv' upwofi'd iii'oiiiid tho nozzle through n routriotud piissngo or mixing ohiinilioi, it wiil teilw up the required innount of giisolono to soilioiontly .snturzito tho nir, :ind ,vhun ii high opood is iittiunod o titi-ong ourroni, ol on' is drown in through thov volvo i4 und possonooross tho opon oppor und oi" tho mixing clninihor, thus riding tho llow from sind uhinnhor sind tlif.r1ou;flilyr mixing thiirowith. Tho roquirod ini-,rooms in tho o inount ol' nii' ou tho n )ood inoronsos is thus nutoiniitiouiiy seouioil without :my chungo in tho i'ogulzitiou.

ln tho dinolhniriijo piisaiiitgo 2i) proi/iclod :i wingod oi' liuttorliy volvo fifi to rostiiot tho piinsiigo und control tho iiilininsion ol' tho onin'gos to tho cylinder, :mid volvo lining oporittod hy iin iirin 47 soourod upon tho outer ond of its Htoin, which inin iii oonuootod in :my dosirod niiinnoi with ii loi/or Within i'oiioh of tho opoi'ziton 42% indioutos ii driiin or pin holo ihiough tho stud ilziving thus l'ully dosoi'iliod my invention, Whzit l ohiini ix:

l. ln :i cin'liuroi-or, tho oonihiniii-ion with zi limit ohinnhor, ii lioiit in sind olnnnhoi, und moons oporiitoil h y tho lloiit ior admitting` liquid to .unid iliinnlior, ol im oir ohiiinlior o tonding downward within tho lloot oliinnlior :ind olosod ot its lower ond :ind open foi' tho named -member and extending downwar within the air chamber, and means for regulating the admission of air to the air chamber;

2. In a carbureter, -the combination with a iloat chamber, a float in said chamber, and

means operated by the float. for admitti lg -end ol said transverse passage.

3. In a carbureter, the combination'with a float chamber, a loat'in said chamber, and means operated by said float for admitting gasolene to the fioat chamber, of a cylindrical body forming an air chamber extending downward in the axis of the fio'at chamber and closed at its lower. end, means for controlling the admission of air to its upper end, tubular members formedgihtegral with said body and extending' laterally in opposite directions therefrom, a cylindrical member fitting within the body to extend across the same and `connect thc tubular members i to form a continuous passage through the ll ody, a valve to close one end of said pasfloat chamber, a ilo'at in said chamber, and

means operated by said float for admitting gasolen'e tothe float chamber, of a cylinrical body formed withan air chamber ex` tending downwardly in the axis of the ioat. chamber, a cap for the upperend of said body rovided with openings for the admission o air thereto, a tubular member itting within the body and extending across the same to form a transverse air passage therethrough, a tubular portion formed integral with said member and extending downward 4within the air chamber to forma mixing chamber, a nozzle member extending up'A ward in the Alower o en end of the mixing 55 charmer, a mutilate disk seated upon theI upper side of the said tubular member within the bodyfand formin avalve toregulate the admission of air, an(l means for turningsald disk. i e0 5A. In a carbureter, the combination with a' fioat chamber, a ioat in said chamber, and means operated b said float for admitting fluid to the chamber, of a 'cylindrical body forming an air chamber the lower vend of.

which extends downward into the -floatv f chamber and formed with laterally extendfv ing tubular ortins, a tubular member .lit-

ting within t e body to connect the laterally extending tubular portions 'and frm a con- 70 tinuous passage through the bod a valve to close one end of said passage a( apted to be opened by suction, a mixin chamber formed integral with said tubu ar member and extending downward in the air chainber and open at its upper end' into the said passage, a nozzle .member extending upward rom the bottom ofthe air chamber into the/ ',v y

open lower end, of the mixing chamber, a

valve controlling the admission of air to the 80.

upper end of the bod in the said passage. i. '6l In a carbureter, the combination of a cylindrical body formed with-laterally eX- tending tubular portions, a member in said '85 body connecting said tubularl ortions to form a transverse air passage tlirough 'the bo'dy and formedwith a seat at its ilpper side, a ca on the upper end of the bod'y pro` vided wit 1 holes for admission of air, a muti-` 90 lated disk seated on the said seat and provided with a stem extending throughfl the cap, -a shield supported over the holes and formed with-a downwardly turned edge, an

arm on the stem, and means carried by the 95' arm to hold the same in itis turned. l

In testimony whereof I aHiX my signature in presence of two witnesses. l l

WALTER L. MARR.

the position to which i Witnesses:

WM. C. Dimaim,- II. E. SHILAND. 

